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joplin/ReactNativeClient/lib/migrations/31.js
Vaidotas Šimkus e11e57f1d8
All: Added support for hierarchical/nested tags (#2572)
The implementation uses / symbol as a nesting separator. I.e. tag/subtag is a nested tag, where tag is the parent tag and subtag is its child. Creating a tag named tag/subtag/subsubtag creates three tags, one for each level. The tags are associated using parent_id field.

In the app, viewing notes with a tag will also show all notes that are associated with any of the tag's descendant tags (same for the note count). Deleting a tag will also delete all its descendant tags.

In the desktop app the tags are shown nested just like the notebooks.
2020-07-12 18:09:07 +01:00

34 lines
966 B
JavaScript

const Tag = require('lib/models/Tag');
const script = {};
script.exec = async function() {
const tags = await Tag.all();
// In case tags with `/` exist, we want to transform them into nested tags
for (let i = 0; i < tags.length; i++) {
const tag = Object.assign({}, tags[i]);
// Remove any starting sequence of '/'
tag.title = tag.title.replace(/^\/*/, '');
// Remove any ending sequence of '/'
tag.title = tag.title.replace(/\/*$/, '');
// Trim any sequence of '/'+ to a single '/'
tag.title = tag.title.replace(/\/\/+/g, '/');
const tag_title = tag.title;
let other = await Tag.loadByTitle(tag_title);
let count = 1;
// In case above trimming creates duplicate tags
// then add a counter to the dupes
while ((other && other.id != tag.id) && count < 1000) {
tag.title = `${tag_title}-${count}`;
other = await Tag.loadByTitle(tag.title);
count++;
}
await Tag.saveNested(tag, tag.title);
}
};
module.exports = script;